Horizontal well completion

the completion that can be run through a given radius of curvature will depend on

1.the radial clearance between the completion item and hole(liner size),

2. the length and flexibility of the completion,

3.the rating of the connection

 

Horizontal well Completion Options

 

1.Open hole 25%

2.Slotted Liner 55%

3.Liner with Partial Isolations  15%

4.Cemented and Perforated Liners 5%

 

 Open hole 25%

1.This type of completion is the simplest and cheapest typed used in consolidated & competent reservoir Rock with almost no sand production.

2.It is represented 25% from total or all completions worldwide

 

  Slotted Liner 55%

1.It is used with or without a screen

2.It is used when the reservoir is unconsolidated or loosely consolidated sands.

3.It is formed 55% from all completions worldwide and it is considered as a prevailing well completion type.

4.its main purpose

—to guard against hole collapse

—to provides a convenient path to insert various tools such as coiled tubing in a horizontal well

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  Liner with Partial Isolations  15%

—Slotted liner in open hole with blank sections and External Casing Packer (ECP).

—This is 15% of total completions worldwide.

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  Cemented and Perforated Liners 5%

—It is expensive and used in long-radius horizontal sections or for medium-radius horizontal sections. It is formed only 5% of all completions worldwide.

—Problems like difficulty of cement job or leakage of cement sheath may arise in this type